Black Holes and Firewalls - Joe Polchinski (SETI Talks) (+playlist)

  

Black Holes and Firewalls - Joe Polchinski (SETI Talks)

Μετάδοση με ζωντανή ροή στις 8 Οκτ 2013

SETI Talks: http://seti.org/talks

Speaker: Joe Polchinsky, Kavli Institute for Particle Physics, UC Santa Barbara

Abstract:

Thought
experiments have played an important role in figuring out the laws of
physics. For the unification of quantum mechanics and gravity, where the
phenomena take place in extreme regimes, they are even more crucial.
Hawking's 1976 paper "Breakdown of Predictability in Gravitational
Collapse" presented one of the great thought experiments in the history
of physics, arguing that black holes destroy information in a way that
requires a modification of the laws of quantum mechanics. Skeptics for
years failed to poke holes in Hawking's argument, but concluded that if
quantum mechanics is to be saved then our understanding of spacetime
must break down in a radical way.

Dr. Polchinsky will present
some of the history of these ideas, what has already been learned from
this puzzle, and the recent `firewall' controversy, which argues that
Einstein's theory breaks down radically for an observer falling into a
black hole.

ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 21/2/2014